The removal of metal impurities is essential when recycling silicon sawing waste. In this study, Si, SiC, and metal fragments were separated by sedimentation in an applied electrical field. A magnetic field was incorporated into the system to promote the separation of iron-based fragments from the sawing waste. When a 1V/cm electrical field and a 0.3T magnetic field were applied for 24h to the system in a pH7 solution, the residual amount of iron reduced to less than 0.0185% of the initial amount. The maximum SiC content in the recovered powder was 87.8wt%, while the minimum was 12.3wt%, i.e., roughly 87.7wt% Si. Applying a magnetic field to the recycling system can effectively reduce the residual iron content; in addition, Si, SiC, and metal fragments can be separated in a single procedure.